Oeville m



(No Model.)

o. M. MORSE.

PLOUR BOLT.

No. 353,698. Patented Deo. '7, 1886.

N. PETERs Phnmmmgmpnnr, waxhmgim D. C.

UNITED STATES PATNT OFFICE.

ORVILLE M. MORSE, OF JACKSON, MlOHlGAN, ASSIGNOR TO THE KNIOKER- BOCKER COMPANY, OF SAME PLACE.

FLOUR-BOLT.

SPECIFICATION forming part of Letters Patent NO. 353,698, dated December 7, 1886.

Application tiled September 1, 1885. Serial No. 175,943.

To all whom it may concern:

Beit known that I, ORVILLE M. MORSE, of Jackson, in the county of Jackson and State of Michigan, have invented a new and useful Improvement in Flourolts, of which the following is a specification.

This invention relates to an improvement in that class of flour-bolts which consist of an inclined screen and an elevating mechanism fac- 1o ing the screen, whereby the meal or other material to be bolted is elevated and delivered upon the upper end o f the inclined screen, and theny caused to flow over the screen, whereby the desired sifting operation is effected. w

The object of this invention is to remove the light impurities from the meal or other material under treatment by means of an air-current in a simple and inexpensive manner.

My invention consists, to that end, of the zcfimprovements, which will be hereinafter fully set forth, and pointed out in the claims.

In the accompanying drawings, Figure 1 is a vertical cross section of a flour-bolt provided with my improvement. Fig. 2 is a longitudinal sectional elevation of the machine.

Like letters of reference refer to like parts in the several figures.

A represents the stationary frame of the machine, provided with a casing or chest, A',

3o which incloses the principal working parts of the iiour-bolt.

B represents the inclined screen ,supported in the chest A and extending lengthwise through the same, so as to separate the upper or meal chamber, B, from the lower or flour chamber, B2.

C C are two conveyers arranged lengthwise in the bottom of the Hour-chamber B2, and provided ,with suitable slides in a well-known 4c manner, to enable the operator to draw off the (No model.)

arranged between the elevating mechanism and the inclined screen, and which directs the falling material upon the tight inclined board at the upper end of the inclined screen. The board e is provided at its face with adjustable cantboards f, whereby the lateral movement of the material on the screen is regulated in a well-known manner. The board e extends from end to end of the chest A', and is secured to the end boards thereof. rlhe material to be bolted is fed into the chest A at one end through a spout, a, and the tailings escape from the screen B at the opposite end through a spout, a. The movement of the material through the machine from one end of the inclined screen to the other is effected either by said cant-boards or by a slightly-inclined position of the machine, or both.

G is an air-inlet chamber formed underneath the inclined board e by boards g g', and provided at its lower end with an elongated airoutlet opening or slot,h,between the boards gg.

i represents air-inlet openings formed in the end boards of the chest A', opposite the airchambers G, to admit the external air to both ends of said chamber.

K represents a suction-fan mounted in the upper part of the machine,'and having its eye connected with the upper part of the chest A', so as to withdraw the air therefrom. As the chest is practically tight, the air which is withdrawn from it by the fan K is displaced by air entering through the openings i into the chamber G and issuing in a thin stream from the slot h into the chest underneath the upper portion of the elevating mechanism. The material which is discharged from the elevating mechanism falls through this ascending stream of air, whereby the light impurities or fuzzy matters are separated from the material and carried off with the air-current.

L is a settling-chamber, through which the air-current passes before entering the eye of the fan, and which is arranged in the upper portion of the chest A. The inlet-opening Z of the settling-chamber L is provided with an adjustable valve or slide, m, by which the IOC voc andkvolume of the air-current can be regun is a vertical deliecting-board arranged in. the chamber L, and preventing the direct passage of the air-current from the inlet-opening .Z to the eye of the fan.

ois a conveyer arranged in thev bottom of the settling-chamber, for removing the mate rial which is deposited therein. The air-current is weakened in passing through this set'- tling-chamber, whereby the heavier particles, which are removed by the ai r-current from the material under treatment, are permitted to drop out ofthe air-current and are recovered, while the very light impurities pass onward into the fan, and are discharged from the latter either outdoors or into asuitable dust-room.

An air-inlet opening,p. is formedA longitudinally in the rear wall of the chest A, above the lower portion of the elevating mechanism,

and provided with a suitable slide or valvevfor regulating its size. The air-current, entering the chest A through the opening p, removes are stirred up by the buckets passing through the material which is collected on the bottom of the chest A', and carries this light matter upwardly toward the fan. The air-current, issuing from the sloth, passes through the ma terial,` which is discharged in a disintegrated or vinelydiivided condition from the head o1 the elevating mechanism, whereby the aircurrent is enabled to come in contact with all `parts of the material, and effectually separates i rent, whereby the quality and color 4of the i our are materially improved. In bolting mid- 4o` dlingsor Wheatbreaks a similar result is ob-` tained. It is obvious that the air-current also y operates to cool and dry the material.

When two or more machines of this kind are f used in a mill, a single Vfan may be connected with' the several machines by proper spouts.

I claimas my inventionp Y 1. The combination, withv an inclined screen Vand elevating mechanism, ofa chest which in' closes the screen and elevating mechanism, a 5o fan connected with said chest, and an air-inlet arranged below the head ofthe elevating mechanism and above the screen, whereby an aircurrent is caused to flow through the material as it is discharged from the elevating mechan- A ism, substantially as set forth.

2; The combination, with an inclined screen and elevating mechanism, a fan connected with said chest, and an air-inlet arranged on the rear side of the elevating mechanism, whereby 6o an air-current is caused to dow through the light matter floating in the chest on the rear side ofthe elevating mechanism, substantially as set forth.

3. The combination,with the inclined screen' 65 oRvILLE M. MORSE.

` Witnesses:

JNO. G. MUNDY, C. H. WIL'roN. 

